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Journal of applied research and technology

On-line version ISSN 2448-6736Print version ISSN 1665-6423

J. appl. res. technol vol.11 n.5 México Oct. 2013

 

Towards the Design of Safety-Critical Software

 

R. Rafeh1, A. Rabiee1,2

 

1,2 Department of Computer Engineering Arak University Arak, Iran, r-rafeh@araku.ac.ir.

2 Department of IT, Education Organization Arak, Iran. arvand.rabiee@gmail.com.

 

ABSTRACT

Safety is the most important factor when developing software for safety-critical systems. Traditional approaches attempted to achieve safety through testing the software. However, there might be some bugs in the software not revealed in the test procedure. Formal verification is a new trend in developing safe software. In this paper, we propose a multi-phase formal approach for safety management in safety-critical software. We use timed transition Petri-net as a formal means to specify the properties of the model and their relations in each component of the software. In addition, we use the Z language to specify textual and mathematical specifications of the model, as a representative model to evaluate the proposed approach; we chose continuous infusion insulin pump (CIIP).

Keywords: Safety-critical software, hazard, formal languages, CIIP.

 

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